Zonal input device

ABSTRACT

In certain embodiments, a computer mouse includes a chassis to provide support for a user&#39;s hand, where the chassis includes a knuckle support region, a palm support region, a first side region having a first ledge to support a thumb, a second side region having a second ledge to support one or more of a pinky or ring finger, and a button region having one or more buttons to support one or more of a tip of an index finger or middle finger. Each region can be physically separated from one another on the surface of the chassis by a gap. The knuckle support region can include a coating or covering on a surface of the knuckle support region to provide a directionally dependent friction. The friction on the surface of the knuckle support region is higher for side-to-side movements then for front-to-back movements.

CROSS-REFERENCES TO RELATED APPLICATIONS

This present application is a continuation of U.S. patent applicationSer. No. 14/469,521, filed Aug. 26, 2014, entitled, “Zonal InputDevice,” which claims priority to U.S. patent application Ser. No.61/870,148, filed Aug. 26, 2013 entitled “Zonal Input Device,” which arehereby incorporated by reference in their entirety for all purposes.

BACKGROUND

Input devices are common accessories and can be found in mostcontemporary computing devices. Input devices can include computer mice,touch pads, joysticks, track balls, keyboards, key pads, remotecontrols, and more. Computer mice have evolved over the years with manyadded features, functionality, and ergonomic enhancements.

Some of the common features found in many modern computer mice includewireless communication protocols, scroll wheels that function inmultiple axes, multiple buttons that are thumb and/or finger accessible,and touch sensitive, two-dimensional touch surfaces that can providegreater input capabilities, such as touch gestures (e.g., swipes,circular patterns, etc.) that would not otherwise be possible withstandard mechanical buttons.

Input devices can be ergonomically designed for long term comfort. Forexample, the body of the input device (e.g., computer mouse) can includebody contours that optimally support a user's hand and can reduce commonaches and pains associated with long term use, as well as aid or reducechronic symptoms that may be caused by medical conditions, such ascarpal tunnel syndrome.

While many modern input devices are well equipped to meet the needs ofthe typical computer user, few can meet the high standards and precisionperformance required by some gamers. For competitive gamers, any delaythat may be attributed to their input device, be it a mechanicalinefficiency, a non-optimal ergonomic configuration, or a processingdelay, can dictate the difference between winning and losing.

Thus, high end gaming input devices are expected to offer highperformance, high precision, and customization options so that gamerscan maximize their efficiency. In computer mice, for example, a featurethat may improve a user's efficiency can include optional weights tochange the center of gravity and weight distribution of an input deviceto accommodate personal taste. Some mice are tethered to reduce oreliminate the processing time typically associated with wirelesscommunication. Some input devices feature arrays of buttons (mechanicalor touch sensitive) to allow a user to input many different commandswith a single hand. Despite these myriad developments in input devicetechnology, further improvements are needed to enhance the userexperience.

BRIEF SUMMARY

In certain embodiments, a computer mouse includes a chassis to providesupport for a user's hand, where the chassis includes a knuckle supportregion, a palm support region, a first side region having a first ledgeto support a thumb, a second side region having a second ledge tosupport one or more of a pinky or ring finger, and one or more buttonsin a frontal region to support one or more of a tip of an index fingeror middle finger. Each region is physically separated from one anotheron the surface of the chassis by a gap. In some embodiments, the regionsare “zones.”

The knuckle support region can include a coating or covering on asurface of the knuckle support region to provide a directionallydependent friction. The friction on the surface of the knuckle supportregion is designed to be higher for side-to-side movements (e.g.,movement toward the first side and/or second side regions) then forfront-to-back movements (e.g., movement toward the frontal region and/orthe palm region).

In some embodiments, the first side region includes a coating orcovering on a surface of the first side region. The second side regioncan include a coating or covering on a surface of the second sideregion, and the friction on both the first side region and the secondside region can be higher for upward movements than downward movementsdue to the frictional properties of the coating or covering. In someimplementations, the palm region includes a stick-resistant or non-stickcoating or covering. The at least one button of the one or more buttonscan include a coating to improve non-stick and fingerprint resistantproperties of the at least one button.

In certain embodiments, a method of manufacturing a chassis for an inputdevice includes generating a use map or heat map indicating points ofcontact between a top surface of the chassis and a user's hand, whereeach of the points of contact indicate a relative amount of time thatthe user's hand made contact to that particular point of contact over aperiod of time. The method further includes identifying the points ofcontact of the input device that was in contact with the user's hand forlonger than a predetermined time, associating adjacent identified pointsof contact with each other to form regions, identifying areas on thesurface of the chassis outside of the regions, and forming the chassisto include the regions, wherein at least one region on the surface ofthe chassis is completely separated and independent from the otherregions by a gap. The gap can be formed on the surface of the chassis inan area outside of the at least one region.

In further embodiments, the regions can include a knuckle support regionto support an area under the knuckles of an index finger and middlefinger of the user's hand, and a palm support region to support an areaunder the palm of the user's hand. Further still, the regions caninclude a first side region to support a thumb of the user's hand, asecond side region to support one or more of pinky or ring finger of theuser's hand, and a button region to support one or more of a tip of theindex finger or middle finger of the user's hand. In some cases, eachregion is structurally independent from one another such that anexternal force applied to a surface of one region is not translated to asurface on an adjacent region. The spacing between each region can bedetermined, in part, on heat dissipation properties of each of theregions.

In certain embodiments, an input device includes a chassis to providesupport for a hand. The chassis can include a knuckle support region,and a palm support region, where portions of the chassis between eachregion are physically separated from one another by a gap. The chassiscan further include a first side region to support a thumb, a secondside region to support one or more of a pinky or ring finger, and one ormore buttons disposed on or integrated with the chassis. The first sideregion can include a first ledge to support the thumb. The second sideregion can include a second ledge to support the one or more of thepinky or ring finger.

In some implementations, the knuckle support region includes a coatingor covering on a surface of the knuckle support region to provide adirectionally dependent friction, where the friction on the surface ofthe knuckle support region is designed to be higher for side-to-sidemovements then for front-to-back movements. In some cases, the firstside region includes a coating or covering on a surface of the firstside region, the second side region includes a coating or covering on asurface of the second side region, and the friction on both the firstside region and the second side region is higher for upward movementsthan downward movements. The palm region can include a stick-resistantcoating or covering. Directionally dependent friction can be designed tohave substantially more friction in one direction versus anotherdirection. For example, in the knuckle support region, there can be asubstantially higher friction for side-to-side movements as compared tofront-to-back movements. This can ensure that a user's hand maintain asecure hold on the input device without shifting side-to-side, yet stillallows a user to slide their hand forward and/or backwards toaccommodate their grip style (e.g., the manner in which they hold theinput device).

In certain embodiments, a computer mouse includes a chassis to providesupport for a user's hand, where the chassis includes a knuckle supportregion, a palm support region, a first side region having a first ledgeto support a thumb, a second side region having a second ledge tosupport one or more of a pinky or ring finger, and one or more buttonsin a frontal region to support one or more of a tip of an index fingeror middle finger. Portions of the chassis between each region can beremoved such that each support region of the chassis is physicallyseparated from one another.

In certain embodiments, a method of manufacturing a chassis for an inputdevice, the method including generating a use map or heat map indicatingpoints of contact between a top surface of the chassis and a user'shand, where each of the points of contact indicate a relative amount oftime that the user's hand made contact to that particular point ofcontact over a period of time. The method further includes identifyingthe points of contact of the input device was in contact with the user'shand for longer than a predetermined time, associating adjacentidentified points of contact with each other to form regions,identifying areas on the surface of the chassis outside of the regions,and removing at least a portion of the identified regions from the topsurface of the chassis such that each region is physically separatedfrom one another on the top surface of the chassis.

In certain embodiments, an input device includes a chassis to providesupport for a hand. The chassis can include a knuckle support region,and a palm support region, where portions of the chassis between eachregion are removed such that each support region of the chassis isphysically separated from one another.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a simplified diagram illustrating aspects of computer systemwith an input device, according to certain embodiments of the invention.

FIG. 2 is a simplified block diagram of a system configured to operatean input device, according to certain embodiments of the invention.

FIG. 3 is an image illustrating aspects of preferred ergonomiccharacteristics as applied to an input device, according to certainembodiments of the invention.

FIG. 4 is an image illustrating aspects of ergonomic features of aninput device, according to certain embodiments of the invention.

FIG. 5 includes a series of images depicting heat maps for one or moreinput devices and a number of design characteristics thereof, accordingto certain embodiments of the invention.

FIG. 6 includes a series of images depicting a number of ergonomicallyimproved input devices including mapping touchpoints based on gripconfiguration and/or heat mapping signatures, according to certainembodiments of the invention.

FIG. 7 includes a series of images depicting a number of ergonomicallyimproved input devices including mapping touchpoints based on gripconfiguration and/or heat mapping signatures, according to certainembodiments of the invention.

FIG. 8 depicts a simplified flow diagram illustrating aspects of amethod of manufacturing a chassis for an input device, according tocertain embodiments of the invention.

FIG. 9 illustrates several embodiments of chassis that utilizes SMPtechnology, according to certain embodiments of the invention.

FIG. 10 illustrates input devices with shape shifting exo-skeletalpanels and an internal SMP chassis, according to certain embodiments ofthe invention.

FIG. 11 depicts the incorporation of a shape memory polymer (SMP) in aninput device, according to certain embodiments of the invention.

FIG. 12 depicts the incorporation of a shape memory polymer (SMP) in aninput device, according to certain embodiments of the invention.

FIG. 13 depicts the manipulation of a shape memory polymer (SMP) on aninput device, according to certain embodiments of the invention.

FIG. 14A is a perspective view of an input device, according to certainembodiments of the invention.

FIG. 14B is a top view of an input device, according to certainembodiments of the invention.

FIG. 14C is a bottom view of an input device, according to certainembodiments of the invention.

FIG. 14D is a left side view of an input device, according to certainembodiments of the invention.

FIG. 14E is a right side view of an input device, according to certainembodiments of the invention.

FIG. 14F is a front view of an input device, according to certainembodiments of the invention.

FIG. 14G is a back view of an input device, according to certainembodiments of the invention.

FIG. 14H is a perspective view of an input device, according to certainembodiments of the invention.

FIG. 14I is a perspective view of an input device, according to certainembodiments of the invention.

FIG. 14J is a perspective view of an input device, according to certainembodiments of the invention.

DETAILED DESCRIPTION

Embodiments of the invention are generally directed to systems andmethods for enhancing performance characteristics of an input device.

FIG. 1 is a simplified schematic diagram of a computer system 100,according to certain embodiments of the present invention. Computersystem 100 includes computer 110, monitor 120, keyboard 130, and inputdevice 140. In one embodiment, input device 140 can be a computer mouse,a remote control device, a game controller, a mobile device, or anyother suitable device that can be used to convert analog input signalsinto digital signals for computer processing. For computer system 100,input device 140 can be configured to control various aspects ofcomputer 110 and monitor 120.

In some embodiments, input device 140 can be configured to providecontrol signals for movement tracking (e.g., x-y movement on a planarsurface), touch/gesture detection, lift detection, orientationdetection, power management methods, customization controls forergonomic adjustments and contour customization, and a host ofadditional features that would be appreciated by one of ordinary skillin the art with the benefit of this disclosure. Computer 110 may includea machine readable medium (not shown) that is configured to storecomputer code, such as mouse driver software, keyboard driver software,and the like, where the computer code is executable by a processor (notshown) of the computer 110 to affect control of the computer 110 byinput device 140 and keyboard 130. The various embodiments describedherein generally refer to input device 140 as a computer mouse orsimilar input device, however it should be understood that input device140 can be any input/output (I/O) device, user interface device, controldevice, input unit, or the like.

FIG. 2 is a simplified block diagram of a system 200 configured tooperate input device 140, according to some embodiments of theinvention. System 200 includes control circuit 210, customizationcontrol block 220, movement tracking system 230, power management system240, communication system 250, and touch detection system 260. Each ofthe system blocks 220-260 can be in electrical communication with thecontrol circuit 210. System 200 may further include additional systemsthat are not shown or discussed to prevent obfuscation of the novelfeatures described herein.

In certain embodiments, control circuit 210 comprises one or moremicroprocessors (μCs) and can be configured to control the operation ofsystem 200. Alternatively, control circuit 210 may include one or moremicrocontrollers (MCUs), digital signal processors (DSPs), or the like,with supporting hardware and/or firmware (e.g., memory, programmableI/Os, etc.), as would be appreciated by one of ordinary skill in the artwith the benefit of this disclosure. Alternatively, MCUs, μCs, DSPs, andthe like, may be configured in other system blocks of system 200. Forexample, customization control block 230 may include a local processorto control the customization processes described herein (e.g., shapememory polymer control, etc., as further described below). In someembodiments, multiple processors may provide an increased performance insystem 200 (e.g., speed and bandwidth). It should be noted that althoughmultiple processors may improve system performance, they are notrequired for standard operation of the embodiments described herein.

Customization control block 220 can include one or more sub-systems thatcan be configured to control various aspects of the ergonomic systemsand comformable region(s) that can be disposed on input device 140. Forexample, some embodiments may control a heater element in a shape memorypolymer (SMP) system. Customization control block 220 may be a discretesystem utilizing a local processing device, or may be integrated orsubsumed in control circuit 210. Some or all of the customizationcontrol systems can be included in a single embodiment, or multipleembodiments, as required by design. The ergonomic systems andconformable regions that may utilize these control mechanisms arefurther discussed below.

Movement tracking system 230 is configured to track a movement of inputdevice 140, Movement tracking system 240 can use optical sensors such aslight-emitting diodes (LEDs) or an imaging array of photodiodes todetect a movement of input device 140 relative to an underlying surface.Input device 140 may optionally comprise movement tracking hardware thatutilizes coherent (laser) light. In certain embodiments, one or moreoptical sensors are disposed on the bottom side of input device 140 (notshown). Movement tracking system 230 can provide positional data (e.g.,X-Y coordinate data) or lift detection data. For example, an opticalsensor can be used to determine when a user lifts input device 140 offof a surface and send that data to control circuit 210 for furtherprocessing.

In certain embodiments, accelerometers can be used for movementdetection. Accelerometers can be electromechanical devices (e.g.,micro-electromechanical systems (MEMS) devices) configured to measureacceleration forces (e.g., static and dynamic forces). One or moreaccelerometers can be used to detect three dimensional (3D) positioning.For example, 3D tracking can utilize a three-axis accelerometer or twotwo-axis accelerometers. Accelerometers can further determine if inputdevice 140 has been lifted off of a surface and provide movement datathat can include the velocity, physical orientation, and acceleration ofinput device 140. In some embodiments, gyroscope(s) can be used in lieuof or in conjunction with accelerometer(s) to determine movement orinput device orientation.

Power management system 240 can be configured to manage powerdistribution, recharging, power efficiency, and the like, for inputdevice 140. In some embodiments, power management system 240 can includea battery (not shown), a USB based recharging system for the battery(not shown), power management devices (e.g., low-dropout voltageregulators—not shown), and a power grid within system 200 to providepower to each subsystem (e.g., accelerometers 220, gyroscopes 230,etc.). In certain embodiments, the functions provided by powermanagement system 240 may be incorporated into the control circuit 210.

Communications system 250 can be configured to provide wirelesscommunication with the computer 110, or other devices and/orperipherals, according to certain embodiment of the invention.Communications system 250 can be configured to provide radio-frequency(RF), Bluetooth, infra-red, or other suitable communication technologyto communicate with other wireless devices. System 200 may comprise ahardwired connection to computer 110. For example, input device 140 canbe configured to receive a Universal Serial Bus (USB) cable to enablebi-directional electronic communication with computer 110 or otherexternal devices. Some embodiments may utilize different types of cablesor connection protocol standards to establish hardwired communicationwith other entities.

In some embodiments, touch detection system 260 can be configured todetect a touch or touch gesture on one or more touch sensitive surfaceson input device 140. Touch detection system 260 can include one or moretouch sensitive surfaces or touch sensors. Touch sensors generallycomprise sensing elements suitable to detect a signal such as directcontact, electromagnetic or electrostatic fields, or a beam ofelectromagnetic radiation. Touch sensors can be configured to detect atleast one of changes in the received signal, the presence of a signal,or the absence of a signal. Furthermore, a touch sensor may include asource for emitting the detected signal, or the signal may be generatedby a secondary source. Touch sensors may be configured to detect thepresence of an object at a distance from a reference zone or point,contact with a reference zone or point, or a combination thereof.Certain embodiments of input device 140 may not utilize touch detectionor touch sensing capabilities.

Various technologies can be used for touch and/or proximity sensing.Some examples of include, but are not limited to, resistive (e.g.,standard air-gap 4-wire based, based on carbon loaded plastics whichhave different electrical characteristics depending on the pressure(FSR), interpolated FSR, etc.), capacitive (e.g., surface capacitance,self-capacitance, mutual capacitance, etc.), optical (e.g., infraredlight barriers matrix, laser based diode coupled with photo-detectorsthat could measure the time of flight of the light path, etc.), acoustic(e.g., piezo-buzzer coupled with some microphones to detect themodification of the wave propagation pattern related to touch points,etc.), although other methods of detection may be incorporated.

Although certain systems may not expressly discussed, they should beconsidered as part of system 200, as would be understood by one ofordinary skill in the art. For example, system 200 may include a bussystem to transfer power and/or data to and from the different systemstherein. In some embodiments, system 200 may include a storage subsystem(not shown). A storage subsystem can store one or more software programsto be executed by processors (e.g., in control circuit 210). It shouldbe understood that “software” can refer to sequences of instructionsthat, when executed by processing unit(s) (e.g., processors, processingdevices, etc.), cause system 200 to perform certain operations ofsoftware programs. The instructions can be stored as firmware residingin read only memory (ROM) and/or applications stored in media storagethat can be read into memory for processing by processing devices.Software can be implemented as a single program or a collection ofseparate programs and can be stored in non-volatile storage and copiedin whole or in-part to volatile working memory during program execution.From a storage subsystem, processing devices can retrieve programinstructions to execute in order to execute various operations (e.g.,shape memory polymer heater control, etc.) as described herein.

It should be appreciated that system 200 is illustrative and thatvariations and modifications are possible. System 200 can have othercapabilities not specifically described here (e.g., mobile phone, globalpositioning system (GPS), power management, one or more cameras, variousconnection ports for connecting external devices or accessories, etc.).Further, while system 200 is described with reference to particularblocks, it is to be understood that these blocks are defined forconvenience of description and are not intended to imply a particularphysical arrangement of component parts. Further, the blocks need notcorrespond to physically distinct components. Blocks can be configuredto perform various operations, e.g., by programming a processor orproviding appropriate control circuitry, and various blocks might ormight not be reconfigurable depending on how the initial configurationis obtained. Embodiments of the present invention can be realized in avariety of apparatuses including electronic devices implemented usingany combination of circuitry and software. Furthermore, aspects and/orportions of system 200 may be combined with or operated by othersub-systems as required by design. For example, customization controlblock 220 may operate within control circuit 210 instead of functioningas a separate entity. Moreover, it should be understood that the variousembodiments of surface regions discussed herein can be of any size,shape, color, texture, etc., and can be applied to any input device(e.g., input device 140), at any preferred location and in any desiredconfiguration.

FIG. 3 is an image 300 illustrating aspects of preferred ergonomiccharacteristics as applied to an input device, according to certainembodiments of the invention. The image shows features of a hand and thevarious ergonomic requirements thereof, including its position on amouse (e.g., gaming mouse), the action typically required by aparticular finger (e.g., fast clicking, weight distribution, lifting,etc), and certain preferred characteristics of an input device withrespect to the particular fingers or portions of the hand. Byaccommodating these ergonomic requirements, a user can experiencegreater comfort, prolonged use without fatigue, greater control of theinput device, improved reliability and consistency, and a host of otherattributes that would be desirable by a user—particularly for gamers orother users that may utilize an input device for an extended period oftime or may have precise and exacting control requirements in theirparticular application. Although FIG. 3 and the information therein isdirected to a person's right hand, the same requirements and inputdevice specifications can be applied to left-handed input devices oreven left/right hand neutral device. In some embodiments, the ergonomicrequirements of FIG. 3 can be incorporated into input device 140.

Referring to FIG. 3, the features described include the thumb 310, indexfinger 320, middle finger 330, ring finger 340, little finger (pinky)350, outer palm 360, inner palm 370, ring finger knuckle 380 and triggerknuckles 390. The thumb 310 may reside in a thumb scoop (e.g., on inputdevice 140) and may actuate buttons on a gaming mouse or other suitableinput device. An example of a thumb scoop and thumb buttons are shown inFIGS. 14A-J. On a gaming mouse, thumb 310 typically performs actionsincluding grip (e.g., to secure the mouse), movement (e.g., for changingthumb position), clicking thumb buttons, lifting (repositioning themouse), orientation, and the like. Some requirements of thumb 310include thumb support, non-slip characteristics, heat dissipationproperties (e.g., to reduce sweating), breathability (e.g., to reducesweating), and hygenic properties (e.g., to prevent bacteria, mold,etc., from growing as a result of sweat, heat, etc.).

The index finger 320 may be positioned to actuate a left trigger buttonand/or index buttons of the input device 140. On a gaming mouse, indexfinger 320 typically performs highly frequent clicking and requiresmouse characteristics that accommodate high speed clicking, consistency,assured reliable performance, and positioning such that the tip of theindex finger is centered over the switch for efficient actuation. Thesecharacteristics are typically important to competitive gamers since theyperform hundreds, if not thousands, of clicks during the course of agame and require exacting performance characteristics that they cancount on for a competitive edge.

The middle finger 330 may be positioned to actuate a right triggerbutton, according to certain embodiments. On a gaming mouse, middlefinger 330 typically performs highly frequent clicking and, like theindex finger 320, requires mouse characteristics that accommodate highspeed clicking, consistency, assured reliable performance, andpositioning such that the tip of the index finger is centered over theswitch for efficient actuation.

The ring finger 340 may be positioned to rest on the right side of theinput device 140, according to certain embodiments. On a gaming mouse,ring finger 340 typically performs lifting actions, skating actions,orientation, and grip actions. Lifting actions may occur, e.g., when theuser lifts input device 140 to move it to a different position. Skatingactions include lifing and moving a mouse. Orientation can includeorienting the hand with respect to the input device while its in use. Agrip action can include securing input device 140 with the index fingerin conjunction with one or more of the thumb 310 and little finger 350.Some requirements for ring finger 340 on input device 140 can includenon-slip characteristics, an optimal surface area on input device 140, alifting platform on input device 140, and positioning such that ringfinger 340 does not drag on the table during use.

The little finger (“pinky”) 350 may be positioned to rest on the rightside of the input device 140, according to certain embodiments. On agaming mouse, ring finger 340 typically performs lifting actions,skating actions, orientation, and grip actions. Some requirements forlittle finger 350 on input device 140 can include non-slipcharacteristics, and positioning such that little finger 350 does notdrag on the table during use.

The outer palm 360 may be positioned on a palm zone of input device 140,according to certain embodiments. On a gaming mouse, the palm zonetypically controls hand weight distribution on the input device, handorientation on the input device, and typically rests on the input device140. Some requirements for outer palm 360 on input device 140 caninclude a rest location, extended comfort for long periods of use, heatdissipation properties (e.g., to reduce sweating), breathability (e.g.,to reduce sweating and added comfort), hygenic properties (e.g., toprevent bacteria, mold, etc., from growing as a result of sweat, heat,etc.), reduced wear of the palm region of the input device from longterm use, and assured grip.

The inner palm 370 may be positioned on a palm zone of input device 140,according to certain embodiments. On a gaming mouse, the palm zonetypically controls hand weight distribution on the input device, handorientation on the input device, and typically rests on the input device140 in the palm region. Some requirements for inner palm 370 on inputdevice 140 can include a rest location, extended comfort for longperiods of use, heat dissipation properties (e.g., to reduce sweating),breathability (e.g., to reduce sweating and added comfort), hygenicproperties (e.g., to prevent bacteria, mold, etc., from growing as aresult of sweat, heat, etc.), reduced wear of the palm region of theinput device from long term use, and assured grip.

The ring finger knuckle 380 may be positioned to rest on the right sideor right edge of input device 140, according to certain embodiments. Ona gaming mouse, ring finger knuckle 380 typically performs pushingactions on input device 140 or rests on the right edge for stability.Some requirements for ring finger knuckle 380 can include a surface torest, non-slip characteristics, and non-edge contact.

The trigger knuckle 390 may be positioned on the knuckle rest (e.g.,knuckle support region) of input device 140, according to certainembodiments. On a gaming mouse, trigger finger knuckle 390 typicallyperforms actions corresponding to hand orientation, hand weightdistribution, and movements to control the poise or configuration of auser's trigger fingers (e.g., index finger 340 and middle finger 330).Some requirements for trigger finger knuckle 380 can include an assuredgrip and contact, control to ensure the the trigger fingers arecorrectly angled, heat dissipation properties, and reduced wear fromlong term use.

FIG. 4 is an image illustrating aspects of ergonomic features of aninput device 400, according to certain embodiments of the invention.Device 400 can include a button region 405 including one or more buttons(e.g., left/right triggers) 408/410, a scroll wheel 420, a chassis 430,a knuckle support region 440, a first side region 450 (e.g., includingthumb scoop), a second side region 460 (e.g., including right ridge), apalm support region 470 (e.g., palm rest), and more, as shown. Inputdevice 400 can be a computer mouse or other suitable input device, asdescribed in relation to input device 140.

In some embodiments, chassis 430 may be comprised of a single body ormultiple bodies that are interconnected (e.g., outer chassis and innerchassis). Chassis 430 can be a frame or housing. The chassis can havemultiple regions, including but not limited to, a knuckle supportregion, a palm support region, a left side region including a firstledge configured to support the user's thumb, a right side regionincluding a second ledge configured to support one or more of a pinky orring finger, and a button region having one or more buttons disposed onor integrated with the chassis. In some implementations, the multipleregions are located and accessible by a user on the upper surface of theinput device 400. Although FIG. 4 depicts a particular input device 400configured for a right-handed user, the concepts described herein can beapplied to a left-handed mouse, a universal mouse (right or left handeduse), and even other input devices that are not necessarily computermice, but could implement the ergonomic concepts described herein.

The chassis can include multiple regions such that the different regionsare separate (e.g., separated by a gap). For example, in certainembodiments, portions of the chassis between each region are removedsuch that each support region of the chassis is physically separatedfrom one another. Separate regions are less likely to translatedeflection, deformation, or more generally, kinetic energy from oneregion to the next. Such embodiments may exhibit more stable physicalperformance characteristics. Furthermore, removing chassis material canimprove heat dissipation characteristics, reduce weight, reducemanufacturing material requirements, reduce manufacturing costs, andmore. In some embodiments, the chassis can have internal and externalportions, where the external chassis portions are separated (e.g.,knuckle support region, palm support region, etc.) and the internalchassis portion remains connected to each region to maintain coreintegrity. Some of the different regions can be separate and some can beintegrated. For example, some embodiments may have the knuckle supportregion and side support regions separated, but the palm support regionmay be joined with (i.e., contiguous with) the knuckle support region.It should be understood that any combination or permutation of chassisseparation can be used, and the embodiments depicted and describedherein are not limiting or all inclusive. Some embodiments may only haveone or two regions separated at the surface of the input device, whileothers may separate all of them. These examples and furtherimplementations would be appreciated by one of ordinary skill in the artwith the benefit of this disclosure.

In some embodiments, gaps are formed between one or more regions, ratherthan removed, at the time of manufacturing. For example, some chassismay be die cast, injection molded, or other suitable form ofmanufacturing, to include the gaps between the one or more separated andindependent regions described herein. One of the regions, some of theregions, or all of the regions can be formed to be separate andindependent from the other regions. They can be independent only at thesurface of the chassis, they can be completely independent both at thesurface and throughout the chassis, or some combination thereof. Thegaps can be formed by removing material, or the gaps can be manufacturedat the time of formation (i.e., not removed), as discussed above. Thegaps can be of any suitable width, and some gaps may be wider thanothers. Some gaps may have different widths at different locations on aparticular region. For example, a gap between the palm support regionand the knuckle support region may be larger than a gap between the palmsupport region and the left side region. Some embodiments may onlyinclude one region that is separated and independent from the otherregions. Others may have several separate and independent regions. Themany combinations, permutations, and applications of the separatedregions (and how they are separated—i.e., at the surface, throughout thechassis, etc.) would be appreciated by one of ordinary skill in the artwith the benefit of this disclosure. As discussed above, some of theadvantages of having independent regions include allowing differenttreatments for each region (e.g., coatings, coverings, aesthetics),different materials for each region, greater strength and mechanicalseparation such that deformations for forces on one region may nottranslate to a separate region, better heat dissipation characteristics,and more. It should be noted that all of the embodiments describedherein, as well as their associated inventive concepts can be mixed andmatched in any suitable combination as required by design.

Palm support region 470 can include a single region or multiple regions(e.g., 2 regions) to support the thenar (inner palm) and hyper thenarareas (outer palm) independently. Palm support region 470 supports auser's palm and can be used to control hand weight distribution, handorientation, and a place to rest the palm. The inner palm rest of palmsupport region 470 (i.e., thenar rest) can be a convex support surfaceand may be contoured to transition into the thumb area. The outer palmsupport area (hyper thenar rest) can provide pinky knuckle support andcan be contoured to seamlessly transition from the trigger knuckleregion.

Some requirements for inner palm portion of palm region 470 can includea rest location, extended comfort for long periods of use, heatdissipation properties (e.g., to reduce sweating), breathability (e.g.,to reduce sweating and added comfort), hygenic properties (e.g., toprevent bacteria, mold, etc., from growing as a result of sweat, heat,etc.), reduced wear of the palm region of the input device from longterm use, and assured grip.

As discussed above, the outer palm 360 typically controls hand weightdistribution on the input device, hand orientation on the input device,and typically rests on the input device 140. Some requirements for outerpalm portion of palm region 470 can include a rest location, extendedcomfort for long periods of use, heat dissipation properties (e.g., toreduce sweating), breathability (e.g., to reduce sweating and addedcomfort), hygenic properties (e.g., to prevent bacteria, mold, etc.,from growing as a result of sweat, heat, etc.), reduced wear of the palmregion of the input device from long term use, and assured grip.

In some embodiments, palm support region 470 can include a coating orcovering to improve its heat dissipation and hand contacting properties.In many cases, relatively large amounts of heat are generated byhand/palm contact due to the surface area contact and force applied tothe region. By improving heat dissipation properties, long term usercomfort can be improved. Some embodiments may employ a coating orcovering to improve the contact between the user's hand and the mouse toprevent slippage. For example, Teflon PTFE can be used on the palmsupport region (and other regions) to improve these properties. In someembodiments, anti-stick coatings can be used. Other coatings andcovering can be used to achieve these properties as would be appreciatedby one of ordinary skill in the art with the benefit of this disclosure.

In certain embodiments, shape memory polymers (SMP) can be used in thepalm support region (and other regions) to allow a user to customize thefeel and contour of the mouse. Some SMP materials also exhibit improveheat dissipation characteristics and no no-slip properties. FIGS. 9-12illustrate various embodiments that employ and integrate SMPtechnologies.

Knuckle support region 440 can be configured to support a user'sknuckles (e.g., trigger finger knuckles) which can be used to leveragefinger movement. Excellent knuckle support can enable fast and precisebutton articulation. The knuckle support can include a coating orcovering on its surface to provide directional or direction-dependentfrictional properties. Good computer mouse control typically calls forfreedom of movement for the knuckles in front-to-back movements andlittle to no movement in the left-right movements. This is becausefront-to-back movement and repositioning of fingers are typically common(e.g., typically related to button access), but side-to-side movementtypically promotes instability in the hand/mouse connect. Thus, incertain embodiments, the friction on the surface of the knuckle supportregion is higher for side-to-side movements then for front-to-backmovements due to aspects of the coating and/or covering that provide fordiffering amounts of friction depending on the direction of the forceapplied to the knuckle support region. In some cases, the friction forside-to-side movements on the surface of the knuckle support region canbe significantly higher than for front-to-back movements on its surface,which may experience perceptibly little friction. The coating orcovering can also improve heat dissipation characteristics or provideaesthetically preferred properties (e.g., textures, designs, contours,etc.). In some cases, knuckle support region 440 includes an arch highpoint directly below the placement of a user's knuckles. Thus, thesurface can accommodate pronation and provides a flowing and contouredtransition to the other regions of input device 400.

The left side region (e.g., first side) 450 and right side regions(e.g., second side) 460 can employ designs the promote good mousecontrol and stability. Lifting and moving a mouse (i.e., “skating”) mayfrequently occur for repeated or long movements in one direction occur.For example, when a user moves a mouse to the edge of a mouse pad, theuser typically picks up the mouse and re-centers it in the middle of themouse pad to continue the movement. Thus, upward forces on the sides ofthe mouse should exhibit higher amounts of friction to promote goodcontact with the fingers/thumb for easy lifting or skating. In contrast,repositioning one's hand on the mouse may be common and can includemoving the thumb/hand downward with respect to the left/right sides(e.g., in changing mouse grip styles). As such, direction frictionalproperties are employed in the left side 450 and right side regions 460,according to certain embodiments of the invention. Improved frictionalproperties (i.e., direction dependent friction) can be implemented byincluding a coating or covering on their respective surfaces, where thefriction on the surface of the left side and right side regions ishigher for upward movements then for downward movements. In certainimplementations, the left side region includes a coating or covering ona surface of the left side region, the right side region includes acoating or covering on a surface of the right side region, and thefriction on both the left side region and the right side region ishigher for upward movements than downward movements. In some cases, thefirst side region includes a first ledge to support the thumb, and thesecond region includes a second ledge to support one or more of thelittle finger or ring finger.

In some embodiments, button region 405 can have one or more buttons408/410 to support one or more of a tip of an index finger or middlefinger, the one or more buttons disposed on or integrated with thechassis. The one or more buttons can include a coating or covering toimprove non-stick and fingerprint resistant properties. In some cases,the coating resists absorption or collection of oils from a user's hand.These properties help maintain performance characteristics of thebuttons over long term use. The left button/trigger may have a number ofergonomically preferable properties including a flatter surface for FPS(first person shooter) triggers, a slight concavity right of center ofthe button, and separation from the right button/trigger to reducestiffness. The right button/trigger may include a flowing tilted surfacefor phalanx contact, slight concavity left of center, and may extendfurther than the left trigger. Button region 405 can include mechanicalbuttons, touch sensitive regions (e.g., capacitive sensors, resistivesensors, etc.), or other type of button configured to detect a “click,”touch, gesture, or the like, on chassis 430.

Input device 400 can include any number of additional properties andfeatures to enhance the user experience, many of which are illustratedin FIGS. 14A-J. For example, additional buttons can be included by thethumb position and near the left/right triggers to provide more controloptions for the user. In some implementations, the button locationsprovide for easy blind registration of the button locations, they canprovide a subtle ledge to eliminate accidental presses, and may bedefined by distinct button edges to help differentiate them withoutrequiring the user to divert their attention to look at the button.

The right side of input device 400 can include an undercut concavity forboth pinky and ring finger support, forming a ledge to facilitate gripand lift. Additionally, the right side transition between regions can becontoured in a smooth manner for soft transitions to reduce the numberof hard edges. The left side (e.g., first side) includes a thumb scoopthat may include a heavy concave surface with a flowing contour ortransition to the side buttons, as shown in FIGS. 14A-J. In someembodiments, the thumb scoop can be part of first side region 450.

Smart displays may be integrated in any suitable location on inputdevice 400. In some embodiments, one or more smart displays may beintegrated in the top surface of input device 400 in a viewing anglefacing the user for quick-glance viewing.

FIG. 5 includes a series of images 500 depicting heat maps for one ormore input devices and a number of design characteristics thereof,according to certain embodiments of the invention. The succession ofheat maps show an infra-red representation illustrating how a usercontacts an input device. Brighter colors (e.g., white, orange) indicateareas where the user had high amount of physical contact with the inputdevice. Darker colors (e.g., black, purple) indicate areas where theuser had little to no physical contact with the input device. Based onthe heat map signatures, more efficient chassis design can be created.Although the images shown and described show heat maps using infra-redimaging, it should be understood that other methods may be used toindicate time-based contact maps, such as use maps that show relativecontact times. That is, use maps that show points of contact between atop surface of the chassis and a user's hand to indicate a relativeamount of time that the user's hand made contact to that particularpoint of contact over a period of time.

Based on the heat map images, various physical and psychologicalconsiderations can be effectively addressed and designed into thechassis configuration for input device 400. Some physical andpsychological considerations may include comfort, familiar ergonomics,efficient gaming design, blind registration of input device features(e.g., buttons), precision, certitude of action, and more. Thus, idealchassis configurations can be designed by providing ergonomic supportfor regions with high user contact, and removing superfluous elements(regions with low levels of user contact) to form a chassis withindependent regions that are physically separated from one another onthe top surface of the chassis. These heat map characteristics and theassociated physical and psychological considerations listed were used,at least in part, in the development of certain embodiments of theinvention described herein. Some of the resulting chassis designs basedon heat maps for varying user grip configurations (e.g., claw,fingertip, full crown) are shown in FIGS. 6 and 7.

FIGS. 6 and 7 includes a series of images depicting a number ofergonomically improved input devices including mapping touchpoints basedon grip configuration and/or heat mapping signatures, according tocertain embodiments of the invention.

FIG. 8 depicts a simplified flow diagram illustrating aspects of amethod 800 of manufacturing a chassis for an input device, according tocertain embodiments of the invention. Method 800 begins generating a usemap or heat map indicating points of contact between a top surface ofthe chassis and a user's hand (810). Each of the points of contact canindicate a relative amount of time that the user's hand made contact tothat particular point of contact over a period of time. Thus, a chassisthat only supports a user's primary points of contact with the chassissurface can be determined. One example of a heat map is shown in FIG. 5,as discussed above.

At 820, the method continues with identifying the points of contact thatthe input device was in contact with the user's hand for longer than apredetermined time. For example, use maps can indicate a relative amountof contact time between a hand and the surface of the chassis. Areaswith contact occurring over a predetermined time can be selected.Alternatively, heat maps can be used and areas shown in white or bright(e.g., see FIG. 5) to indicate areas having the most user hand contact.At 830, points of contact are associated with each other to formregions. For example, use maps showing points of contact immediatelyadjacent to one another can be grouped together to form the variousregions (e.g., knuckle support region, button region, etc.). Regions canalso be formed based on heat maps. For instance, areas with orange orwhite heat signatures that are surrounded by darker (i.e., colder) areascan be used to form regions. At 840, areas on the surface of the chassisthat are outside of the formed regions are identified. In someembodiments, at least a portion of the identified regions from the topsurface of the chassis are removed such that each region is physicallyseparated from one another on the top surface of the chassis (850).Alternatively, (850) can include forming the chassis to include theregions, wherein at least one region on the surface of the chassis iscompletely separated and independent from the other regions by a gap.One of the regions, some of the regions, or all of the regions can beformed to be separate and independent from the other regions. They canbe independent at the surface of the chassis, they can be completelyindependent at the surface and throughout the chassis, or somecombination thereof. The gaps can be formed by removing material, or thegaps can be manufactured at the time of formation (i.e., not removed).The gaps can be of any suitable width, and some gaps may be wider thanothers. Some gaps may have different widths at different locations on aparticular region. Some embodiments may only include one region that isseparated and independent from the other regions. Others may haveseveral separate and independent regions. The many combinations,permutations, and applications of the separated regions (and how theyare separeted—i.e., at the surface, throughout the chassis, etc.) wouldbe appreciated by one of ordinary skill in the art with the benefit ofthis disclosure. As discussed above, some of the advantages of havingindependent regions include allowing different treatments for eachregion (e.g., coatings, coverings, aesthetics), different materials foreach region, greater strength and mechanical separation such thatdeformations for forces on one region may not translate to a separateregion, and more. It should be noted that all of the embodimentsdescribed herein, as well as their associated inventive concepts can bemixed and matched in any suitable combination as required by design.

Some of the regions formed in the chassis can include a knuckle supportregion to support an area under the knuckles of an index finger andmiddle finger of the user's hand, a palm support region to support anarea under the palm of the user's hand, a first side region to support athumb of the user's hand, and a second side region to support one ormore of pinky or ring finger of the user's hand. In some embodiments, abutton region may be formed that can be used to support one or more of atip of the index finger or middle finger of the user's hand. In someimplementations, each region is structurally independent from oneanother such that an external force applied to a surface of one regionis not translated to a surface on an adjacent region. Furthermore, thespacing between each region can be determined, in part, on heatdissipation properties of each of the regions. For example, the amountof spacing between regions may alter the strength, rigidity, heatdissipation properties, and the like, of the different regions of thechassis, as would be appreciated by one of ordinary skill in the artwith the benefit of this disclosure.

It should be appreciated that the specific steps illustrated in FIG. 8provide a particular method of manufacturing a chassis for an inputdevice, according to an embodiment of the present invention. Othersequences of steps may also be performed according to alternativeembodiments. In certain embodiments, method 800 may perform theindividual steps in a different order, at the same time, or any othersequence for a particular application. Moreover, the individual stepsillustrated in FIG. 8 may include multiple sub-steps that may beperformed in various sequences as appropriate to the individual step.Furthermore, additional steps may be added or removed depending on theparticular applications. One of ordinary skill in the art wouldrecognize and appreciate many variations, modifications, andalternatives of the method.

Embodiments Using Shape Memory Polymers

FIGS. 9-12 depict a series of simplified images of input devicesutilizing aspects, features, and implementations of incorporating ashape memory polymer (SMP) into various features of input device 400,according to certain embodiments of the invention. SMP can beimplemented in a variety of ways including surface-based SMP to providefor a customized surface contour. SMP can also be used as region links(e.g., “muscles”) connecting certain regions or sections to the chassisto allow for customizable region placement. In some embodiments, SMP canbe used as region links and/or provide customizable contours (i.e., SMPon the region surface) to accommodate a number of different mouse“grips.” Some common mouse “grips” include the “claw,” the “fingertip,”and the “full crown.” Each of these grips typically require differentfeatures and characteristics. By implementing SMP links and customizablecontours, some embodiments can be optimized for each of the differentmouse grip styles. The many implementations that can be applied to thevarious regions of computer mouse would be appreciated by one ofordinary skill in the art with the benefit of this disclosure.

FIG. 9 illustrates several embodiments of chassis that utilizes SMPtechnology, according to certain embodiments of the invention. Whenheated, the SMP chassis becomes malleable, allowing a user to conformthe surface to a comfortable grip position. In the ceramic matrix shownin FIG. 9, the SMP surface is impregnated with a robust, heat resistantcell structure to provide deformability along the entire top surface ofthe input device.

FIG. 10 illustrates input devices with shape shifting exo-skeletalpanels and an internal SMP chassis, according to certain embodiments ofthe invention. Keyplates (button regions) are shown with rigid SMPmuscle to help with click speed, consistency, and accuracy of response,as well as individual key plate angle orientation control. Triggerknuckles (e.g., knuckle support regions) and outer palm regions (palmsupport regions) employ malleable SMP panels to poise trigger fingersand improve grip. The thumb zone (e.g., first side support) utilizes arigid SMP muscle to provide an assured grip, heat management (improvedheat dissipation properties, airflow (breathability), reduced wear,light weight, and stiffness. As discussed above with respect to FIG. 5,certain embodiments are based on ergonomic heat-signature studies thathighlight locations on the chassis that receive the most user handcontact. Some embodiments, like the input device shown in FIG. 11,include a visual display (e.g., LED lights) to indicate when the SMP isready to be manipulated.

FIGS. 12 and 13 illustrate input devices with SMP features, according tocertain embodiments of the invention. In FIG. 12, a thumb surface isshown that morphs between convex and concave forms to accommodatevariation in grip styles and use cases. As shown, the rear panel canarticulate into a comfortable position for ideal palm support forextended comfort.

FIGS. 14A-J depict a number of views of an input device, according tocertain embodiments of the invention. Input device 1400 can include oneor more buttons (e.g., left/right triggers) 1410, a scroll wheel 1420, achassis 1430, a knuckle support region 1440, a first side region 1450featuring a ridge (e.g., thumb scoop), a second side region 1460featuring a ridge, a palm support region 1470 (e.g., palm rest), andmore, as shown. It should be noted that any of the various regionsdescribed herein (e.g., knuckle support region, palm support region, SMPimplementation, etc.) can be included in an embodiment. For example,some embodiments may use one of the regions described herein, and othermay use more than one, all of the regions, or even include additionalregions not necessarily explicitly described in this document. In thisparticular embodiment, each of the regions of input device 1400 areseparated by a gap such that each region is separate and independentfrom one another. Some embodiments may have a gap around only some ofthe regions. Gap dimensions (e.g., width, length, depth) can vary bydesign. For example, gaps may be present at the surface of the inputdevice, or may extend downward at any suitable distance. Furthermore,gaps dimensions may vary even around the same region to accommodate,e.g., the different levels of force and flexion experienced by eachregion in input device 1400.

Referring to FIGS. 14A-J, the side regions can include coatings thatexhibit non-stick properties. Some embodiments utilize coverings, suchas thermoplastic elastomer rubber (TPR) to increase the durability, aswell as the actual and perceived comfort of the product. Some coatings,such as polytetrafluorethylene (PTFE), is anti-stick, has low-frictionproperties, a matte feel, and is perceived as anti-sweat. PTFE (orsubstitute) can provide a perceptible benefit to some people when usedas a surface coating for certain areas of hand-held products, like amouse (e.g., coatings on side regions, palm regions, knuckle regions,etc.). Other coatings and/or coverings can be utilized that exhibitsimilar properties.

According to certain embodiments, each of the regions (e.g., knucklesupport region, palm support region, key plates, etc.) are separate dueto the chassis design so that different textures and materials can beapplied to each region. As described above, the panels are split orseparated based on the thermal imaging studies, however other methodscan be used to determine how users contact the input device. The splitchassis provides more structural rigidity to the frame. In some cases,the panels (regions) are configured on the chassis. In FIGS. 14A-14J,the panels are flush against the chassis, so the spaces between regionsare not externally visible. The negative spaces in areas that are notcontacted can provide an improved visual effect, increased strength andrigidity, and passive cooling.

Some regions employ directional grips. For example, the side regions caninclude a coating or covering with a direction friction such that upwardmovements (e.g., lifting) has a relatively high coefficient of frictionto prevent slippage during the lift, and a low coefficient of frictionwith downwards movements (e.g., repositions) or lateral movements (e.g.,toward the front and back of the input device) to allow easyre-orientation, hand positioning, and the like. In some embodiments, thefirst side region is the left side region that includes a thumb support.The second side region can be the right side region and may include apinkie and index finger support region. Each of the side regions mayemploy different materials and finishes to achieve optimum performancecharacteristics, as would be appreciated by one of ordinary skill in theart with the benefit of this disclosure. In some cases, Teflon coatingsmay be used to reduce fingerprints on key plates (buttons).

The knuckle support region provides comfort and can include coatings orcoverings that provide directional friction. In gaming, a user may movetheir hand forward and backwards to reposition their hands, but rarelymove their hands from side-to-side, which can lead to instability. Thedirectional friction thus provides a low coefficient of friction forforward and backwards movements on the knuckle support region. Forwardand backward movements correspond to movements toward the front of theinput device (i.e., button region) and the back of the input device(e.g., palm support region). The regions employing coatings or coveringsthat provide directional friction provide more friction that would bepresent with no coating or covering on the particular region. The keyplates, or button region, can be separate key plates to provide a morerobust click experience for the user.

According to some embodiments, lighting mechanisms (e.g., LEDs,backlighting, etc.) can be incorporated into the input device toilluminate certain areas to indicate to a user that different coatings(and thus different direction frictions) are being used. Alternatively,patterns in the coatings or coverings can indicate a directionality ofincreased friction. Other materials can be used to provide differenttextures.

In some implementations, some regions may be replaceable orinterchangeable. For example, buttons 1410 may be swapped out withdifferent styled buttons (e.g., shape, dimensions, color, texture,etc.). Similarly, different knuckle regions having different contourscan be used to accommodate different grip styles. Thus, each region isnot only separate, but may be modular as well to provide vastcustomizable possibilities for the user. Some modular portions canchange function as well. For instance, a first side support panel mayutilize 6 buttons on the side of input device 1400, while another firstside support panel may utilize 2 buttons. In some cases, each key plate(buttons) may be set at a different height or lateral arrangement. Forexample, FIG. 14 shows that the right button is longer than the leftbutton and at a different elevation. Any ergonomic, aesthetic, orfunction aspect can be altered in a modular fashion, as would beappreciated by one of ordinary skill in the art.

While the invention has been described with respect to specificembodiments, one skilled in the art will recognize that numerousmodifications are possible. Thus, although the invention has beendescribed with respect to specific embodiments, it will be appreciatedthat the invention is intended to cover all modifications andequivalents within the scope of the following claims.

The above disclosure provides examples and aspects relating to variousembodiments within the scope of claims, appended hereto or later addedin accordance with applicable law. However, these examples are notlimiting as to how any disclosed aspect may be implemented.

All the features disclosed in this specification (including anyaccompanying claims, abstract, and drawings) can be replaced byalternative features serving the same, equivalent or similar purpose,unless expressly stated otherwise. Thus, unless expressly statedotherwise, each feature disclosed is one example only of a genericseries of equivalent or similar features.

Any element in a claim that does not explicitly state “means for”performing a specified function, or “step for” performing a specificfunction, is not to be interpreted as a “means” or “step” clause asspecified in 35 U.S.C. § 112, sixth paragraph. In particular, the use of“step of” in the claims herein is not intended to invoke the provisionsof 35 U.S.C. § 112, sixth paragraph.

1-20. (canceled)
 21. An input device comprising: a chassis configured tobe held by a user while the input device is in use, the chassisincluding a first region and a second region; and one or more buttonsdisposed in the first region of the chassis, wherein the chassisincludes a coating or covering on a surface of the second region of thechassis that provides a directionally dependent friction such that thefriction is higher for movements along a first direction on the surfaceof the second region than for movements along a second direction alongthe surface of the second region, the second direction being differentthan the first direction.
 22. The input device of claim 21 wherein thefirst direction is normal to the second direction.
 23. The input deviceof claim 21 wherein the second region is configured to interfaced withby a user's hand while the input device is in use.
 24. The input deviceof claim 21 wherein the input device is a video gaming device.
 25. Theinput device of claim 21 further comprising one or more processorscoupled to the one or more buttons, and wherein the one or moreprocessors are configured to receive, interpret, and communicate datagenerated by the one or more buttons.
 26. The input device of claim 26wherein the input device further includes an inertial measurement unit,the inertial measurement unit being controlled by the one or moreprocessors and configured to detect a positional movement of the inputdevice.
 27. The input device of claim 27 wherein the inertialmeasurement unit is configured to detect three-dimensional positionalmovement of the input device.
 28. The input device of claim 21 furthercomprising a shape memory polymer configured to be held and contoured bya user while the input device is in use.
 29. The input device of claim21 wherein the one or more buttons includes a non-stick coating.
 30. Theinput device of claim 29 wherein the coating includes one of athermoplastic elastomer rubber or a polytetrafluorethelene.